Virg, I am well aware of what the frequencies are. How else would I be able to calculate what the THEORETICAL resonant length should be? The problem is that as soon as you install the antennae into the airframe you get capacitive coupling between the structure and the antennae which usually lowers the resonant freq of the antennae. The antennae should therefore be fine tuned in the position where it is going to spend the rest of its days. My question was whether the SWR meter that I have used on CB freq was able to do airband freq as I was always under the impression that it didn't care what freq passed through it. It is after all just a voltmeter. A resonant antennae would absorb maximum current, dropping the voltage to a minimum which would be measured as a low reflected power and vice versa.I would imagine that the power output of the transmitter would be the limiting factor. You could reach a situation where the power transmitted was too much for the meters level adjustment to bring the reading within range of the meter's scale. Regards Dene Collett KR2SRT builder South africa Whisper assembler See: www.whisperaircraft.com mailto: av...@telkomsa.net ----- Original Message ----- From: "VIRGIL N SALISBURY" <virg...@juno.com> To: <kr...@mylist.net> Sent: Tuesday, February 27, 2007 5:48 AM Subject: Re: KR> antennae tuning
> The CB freq is 27 Meg. Airband is108 to137 Meg. > A BIG difference. HF VS VHF, Tune for max signal on receive, Virg
